Question 1

What will be the value of result after the following code is executed?

var arr = [1, 2, 3, 4, 5];

var result = arr.splice(2, 2);

Options :

A : [1, 2, 3, 4, 5]

B : [1, 2, 5]

C : [3, 4]

D : [1, 2, 3, 4, 5, 3, 4]

Answer: C

Question 2

What is the value of property "y" in object "point2" after the following code is executed?

let point = {x: 100, y: 200};

let point2 = {...point};

point2.y = 300;

Options :

A : undefined

B : 100

C : 300

D : 200

Answer: C

Question 3

What is the correct way to define an object "person" with properties "firstName", "lastName", and "age"?

Options :

A : const person = {firstName: 'Jane', lastName: 'Doe', age: 30};

B : const person = new Object('firstName' = 'Jane', 'lastName' = 'Doe', 'age' = 30);

C : const person = {'firstName': 'Jane', 'lastName': 'Doe', 'age': 30};

D : const person('firstName' = 'Jane', 'lastName' = 'Doe', 'age' = 30);

Answer: A

Question 4

In the following code snippet, what line of code should be inserted to declare a method named showInfo that outputs the string "Hi" to the console?

class A {

// insert code here

}

let a = new A();

console.log(a.showInfo());

Options :

A : let showInfo = function() { console.log("Hi"); }

B : showInfo = function() { return "Hi"; }

C : showInfo() { return "Hi"; }

D : function showInfo() { return "Hi"; }

Answer: B

Question 5

What will be the value of result after the following code is executed?

var str = "The quick brown fox";

var result = str.replace(/[aeiou]/gi, '*');

Options :

A : "Th* qck brwn fx"

B : "Th* quck brwn fx"

C : "Th qck brwn fx."

D : Th* q**ck br*wn f*x

Answer: D

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